The Caster chooses a location within 150ft and starts channeling the earth around him causing it to coalesce into the air above him getting denser and denser until it begins to melt into hot lava, the caster cannot move or take any actions. on his next turn, he launches the ball of lava at the chosen point causing it to explode on impact and dealing 8d10 fire damage to enemies within a 15ft radius and half damage to enemies within 30ft.

If the caster: moves, takes an action, or has his concentration broken. The ball of magma explodes prematurely showering the caster with lava and dealing 2d10 fire damage to the caster.

Note: This spell is supposed to fall under the homebrew spell school of geomancy, Idk how to do that so it's Transmutation.